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| Web URL(s): | http://www.jstor.org/stable/pdf/2960533.pdf
Last checked: 10/06/2015
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| Publication Type:
| Refereed |
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| Author(s): | Bonis, Anne;
Grubb, Peter J.;
Coomes, David A. |
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| Author Affiliation: | Department of Plant Sciences, University of Cambridge, Downing Street, Cambridge CB2 3EA, UK. Present address for Bonis: Laboratoire d'Ecologie Végetal, Université de Rennes I, Campus de Beaulieu, 35042 Rennes, Cedex, France. Present address for Coomes: Department of Biology, Imperial College at Silwood Park, Ascot SL5 7PY, UK. |
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| Title: | Requirements of gap-demanding species in chalk grassland: reduction of root competition versus nutrient-enrichment by animals |
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| Section: | Original articles
Other records with the "Original articles" Section
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| Source: | Journal of Ecology. Vol. 85, No. 5, October 1997, p. 625-633. |
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| Publishing Information: | Blackwell Scientific Publications |
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| # of Pages: | 9 |
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| Keywords: | TIC Keywords: Phosphorus; Nitrogen; Animal manures; Bromus erectus; Roots; Arenaria serpyllifolia; Cerastium; Height; Competition
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| Abstract/Contents: | "1. Arenaria serpyllifolia and Cerastium fontanum (two non-mycorrhizal species of small gaps in chalk grassland) were grown from seed on topsoil (0-5 cm) and subsoil (7-12 cm) from a chalk grassland for 100-105 days in a controlled environment room with and without root competition from Bromus erectus (a matrix-forming perennial grass) and with and without addition of nitrate and phosphate. 2. Neither species grew appreciably without addition of P; there was no interaction of P and N. In the presence of P or P + N, both species showed strong inhibition by root competition from Bromus. 3. In a second experiment the Arenaria and the Cerastium were grown for 64 days on four diffferent chalk grassland (CG) soils (pH 6.8-7.6), and on a soil from a ploughed chalk heath grassland (CH; pH 6.4), with and without addition of P and P + N. Both species failed to grow on two of the CG soils, and grew only a little on the other two; both species grew faster with addition of P, but showed no extra effect of P + N. Both species grew rapidly on the CH soil, on which both occur spontaneously in turf 1 cm tall. 4. The mean dry mass of an Arenaria plant in the CH turf was strongly negatively related to the dry mass of grass shoots in a circle of 2.5 cm radius around it. 5. It is concluded that, on most chalk grassland soils, Arenaria and Cerastium are not prevented from invading short turf simply by root competition, but require addition of P via faeces. On soils of lower pH, in which greater quantities of phosphate ions are available, the studied species can grow without nutrient-enrichment by animal activity, but are very sensitive to root competition." |
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| Language: | English |
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| References: | 46 |
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| Note: | Figures
Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Bonis, A., P. J. Grubb, and D. A. Coomes. 1997. Requirements of gap-demanding species in chalk grassland: reduction of root competition versus nutrient-enrichment by animals. J. Ecol. 85(5):p. 625-633. |
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| Web URL(s):
http://www.jstor.org/stable/pdf/2960533.pdf
Last checked: 10/06/2015
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Access conditions: Item is within a limited-access website |
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MSU catalog number: QH 540 .J6 |
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